Sash-weight mold.



S. J. SULLIVAN. SASH WEIGHT MLD. APPLICATION FILED 00u28. i915.

Patented Feb. 8, 1916.

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WIWI/8858:

ds from that s adjacent to id a register recess l of the upper l5 cooperate mold cavities ed by the coleade into a `r section and said grooves a passage nold cavities mold cavity i9 lead from ively, up the e upper ends are counterinterbores or erm a cupzilita'ting the :ess 13 at the l the grooves i into corng the Wall 6 es-21 and '22 escape of air casting, thus' re flaws.

ed by means .e recess 2 oit :ge openings pper section. iperlj7 placed he pins will util the said ser,

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fairness.

' resident of Het Springs, in the county of Garland and State oi' Arkansas, have inlvented a new and useful linproveinent in SasnWeight Molds, of which the following is a specification.

My inventionfis an improvement in sash Weight molds, and the invention has for its object to provide a mold of the character specified adapted for permitting the simultaneous casting of aA number of Weights, each of the desired shape and size, and provided with theeye'ior the passage of the cord, wherein the mold is so arranged that it may be heated or cooled during the, operationof molding, and wherein air vents are provided for preventing the formation of air bubbles, iiaws, and the like in the cast article. j

ln the drawings-F1 ure l is a lonmtuldinal vertical section through the improved mold ready for casting, Fig. 2 is asection on the line 2 2 of Fig. l, looking in the direction of the'arrows adjacent to the line, Fig. 3 is a tcp plan view of the bottom section of the mold, Fig. e is a bottom plan vievv of the upper section, and Fig. 5 is a perspective view of a. completed weight with theeye core in place.

The present embodiment of the invention l comprises a lower section and an upper section fitting within the lower section, the sections having cooperating recessesr forming the molds, and forming passages and air vents when the mold sections are properly placed with respect to each other, and each section is provided with means 'forpermit-V ting the same to be cooled o r heated.

The bottom sectionl of the mold is cellular or hollow, and-the said section is recessed on its upper face transverselj7 as indicated at 2.v yThis recess extends the full Width of the mold section, and the opposite side Walls 3 and 4f of the recess are inclined as show-n, diverging from each other. rllhe upper section fof the mold is shaped to fit within and lill the recess' 2, and when in place, the upper surface of the upper section 5 is Hush with the upper surface of the lower section i. Y

The side walls 6 and 7 oi the upper section are beveled or inclined similar to the side walls 3 and 4 'of the recess, and both sections are cellular or .chambered as indicated Specicetion of Letters Eatent.

application inea october as, 1915. 'serial No. 58,331.

at' 8 for the lower seetion and. per section.

' Openings l@ and ll are pr:

.respective sectionslv and '5, co

with the chambers S and 9, fr the passage of airv to compensa sion and contraction during cooling, and to permit the pass: ing fluid or a heating fluid Whe rlhe adjacent abutting `laces sections are'recessed longitudii cated at 12 and 13, respectivelj cesses being Senn-circular in and cooperating to forni cvli: cavities. ln the present instan cavities are provided, but it is as many cavities might be provi be necessary.

A groove or passage Ll ieai end or each recess 12 Which i: the side wall l of the reeess, ai ing groove l5 leads from each the end adjacent to the Wall section. These grooves let and to provide ports leading to the and each port or passage form operating grooves le and l5 common groove 16 for the loWe 17 for the upper section, the 16y and l? cooperating to for transverse to the axes of the i and communicating' with each by a port or passage let-l5.

that may be trapped during the preventing air bubbles and lil The mold sections are center of pins 23 on the bottom of th the lower section, which. engi 25% on 'the under tace oiC the u l'Vhe-n the mold sections are pr( with respect each other, t enter the openings 2l, and ui pins do enter the openings the mold sections cannot seat properly with respect to each other.

The sash weights 25 shown in Fig. 5 have their ends rounded as shown, and an eye or opening 26 is provided for permitting the passage of thesash. cord toconnect the weight to the sashes. 'lhese eyes Q6 are frusto-conical and they are curved l0ngitudinally. Each eye leads from the center` oi/ one end of the Weight axially a short distance and then curves opening at the slide ol the weight. The small end of the openV ing is at the axis or the weight and the large end is at the side. These eyes are ic'orinedy by cores Qi", each of the said cores being truste-conical in shape and curved longitudinally as shown. The cores are held 1n place at the ends of the mold cavities remote from the pouring recess 20, each core having its large end received -in an opening .28 in the 'bottom of a groove l2 and having its small end received in a cavity extending axially from the mold cavity and formed by coperating grooves 29 and 30 in the lower and upper mold sections respectively.'

ln order to cast a series of weights, the upper section is first removed from the lower section and the cores are inserted, if they are not already in place. Each core is inserted by placing the large end in the recess 28, as indicated in Figs. l and 2. The small end of each core rests in a groove-29 in the lower section, and the upper section may now be placed without disturbing the cores. lVhen the pins 23 enter the openings 24 the sections are centered with respect 'to each other, and the grooves 30 of the upper section will lit over the rounded upper surface of the small ends o if the cores. The molten metal is now poured in the recess 20 sind it passes-,down the ports l8-19` l6-17, 11i-'l5 into the mold cavities. rlhe trapped air is driven up through the vent grooves 21 22, and there is nothing to prevent the molten metal lling the entire mold cavity and making a perfectly formed weight. rihe air in the chambers 8 and 9 will become heated during the casting and will expand but the ports i9 and 1l permit the air to pass out without damage to 'the mold sections.

During the cooling the air will contract in the chambers 8 and 9, and air will pass in through the openings 10 and l1 to compensate for the contraction. lfv desired. a cooling fluid may be made to circulate through VAthe chambers 8 andai) by one of the openings l0 and 11. After the cast Weights have cooled the upper section is removed, and the *weights may then be removed. The

cores are easily detached being .tapering or truste-conical as shown, by. tapping lightly on the small end of each core.

The improved core is snnple in construetion yet very 'erlicient in operation. sections may be exactly centeredand i is no danger of breakage :from heat chilling.

l. A mold for sash weights, compris chambered upper and lower sections, lower section having a transverse recess its upper.l face and having the side we the recess inclined outwardly away each other, the' nppervsection fitting "within the recess, means Jfor centering the sections 'with respect to each other, the sections nav-- ing on their abutting faces coopera; no grooves forming mold cavities and havi u cooperating grooves leading from one end oi! the first-named grooves and coperat' form pouring passages, said last-named i am sages communicating with a common sage extending to the upper surface of the nold and being enlarged to facilitate pour- ;ing, the upper section having vent grooves at the opposite side wall from the pouring passages for permitting the venting oi' the air trapped in the mold cavities, each the first-named grooves of the lower section having a radial depression at the end adjacent to the vent grooves, and the sections having cooperating' grooves at the said end forming axial passages leading from e mold cavities, and cores held by the a passages and the radial depressions oli the first-named grooves, said cores being curved longitudinally and being rusto-conicai shape.

A mold for sash weights, co1 'Y chambered upper and l Wer sections vided with openings for permitting the culation of acooling iiuid or permitting escape or' air'roni the chambers, the loner section'having a transverse recess in its un per face and having the side 'alle ot the recess inclining outwardly away from other, the upper section fitting within the recess, means for centering the sections wiih -3` respect to each other, the sections having their abutting faces cooperating grooves forming mold cavities and having pouri passages at one end and vent passages z the other end, said sections havingnaeans 'tor supporting a core at the end oii each, mold cavity adjacent to the vent passages, each et vthe said cores being curved longitudinaily and being {rnesto-conical and having its small end at the axis of the mold cavity and its large end at the `under side thereon each core supporting ineans comprising' cooperating axial grooves leading from inold cavity at the end adjacent to the vent passage, and a radial depression at the hot- Y tom of the mold cavity.

n 3,. A mold for sash weights, compris chambered upper and lower sections videdwith openings for permitting the ci culatwion of a cooling fluid or permitting l ll iff recess inclining outwardly away from each other7 the upper section fitting within-the recess, means for centering the sections with Arespect-to eachother, the sections having on their abutting faces cooperating grooves forming mold cavities and having pouring passages at one end and vent passages at the other end, said sections having means for supporting a core at the end of each mold cavity adjacent to the vent passages, each of the said cores being curved longitudinally and being frusto-conical and havingits sgpail end at the axis of the mold cavity and its large end at the under side thereof.

4. A mold for sash weights, comprising chambered upper and lower sections provided with openings for permitting the circulation of a cooling Huid or permitting the escape of air from the chambers, the lower section having a transverse recess in its upper face and having the side Walls of the recess inclining raitwardly away from each other, the upper section fitting Within the recess, means for centering the sections with respect to each other, the sections having on their abutting faces cooperating grooves forming mold cavities and having pouring passages at one end and vent passages at the other end, said sections having means for releasably supporting a core at the end of each mold cavity adjacent to the vent passages, and a core supported in each mold cavity.

5. A upper and lower sections, the sections having on their abutting faces cooperating grooves for forming mold cavities having pouring passages at one end and vent passages at the other, said sections having means for supporting a core at the end of each mold cavity adjacent to the vent passages, each of the saidwcores being curved .longitudinally and being frusto-conical and having its small end at the axis of the mold cavity and its large end at one side thereof.

YD. BRUGANER, J. W. ANGLE.

mold for sash weights, comprising 

